26 results about "Lower Jaw Tooth" patented technology

The invention provides an occlusion induction appliance for a tooth replacement period, an orthodontic system for guiding jaw growth in the tooth replacement period and a design method of the orthodontic system. The occlusion induction appliance for the tooth replacement period comprises an upper jaw tooth socket and a lower jaw tooth socket, a lower jaw brace; the intermaxillary connecting body is positioned between the occlusal surfaces of the back tooth areas of the upper jaw tooth socket and the lower jaw tooth socket; wherein the upper jaw tooth socket and the lower jaw tooth socket form a rigid integral structure which cannot move relatively on an occlusal surface through the intermaxillary connector; the intermaxillary connecting body has a preset thickness so as to open occlusion contact of upper and lower anterior teeth in a wearing state, and the intermaxillary connecting body is configured to lock the lower jaw tooth socket at a preset three-dimensional space position relative to the upper jaw tooth socket body; when the occlusion induction appliance for the tooth replacement period is worn, the upper dentition and the lower dentition serve as integral interactive anchorage, and the occlusion force is converted into the orthodontic force acting on the dentition or the jaw bone.

The invention discloses a posterior tooth arrangement method and device based on measurement of an alveolar ridge intercrest line angle and a medium. The method comprises the following steps: acquiring an occlusion record of a patient; according to the occlusion record of the patient, establishing an upper and lower jaw edentulous jaw three-dimensional model of the patient; determining an occlusal plane of the three-dimensional model, and performing preliminary tooth arrangement on the three-dimensional model according to the occlusal plane; carrying out alveolar ridge intercrest line angle measurement on the three-dimensional model after preliminary tooth arrangement; and modifying the three-dimensional model after preliminary tooth arrangement based on an alveolar ridge intercrest line angle measurement result to obtain a posterior tooth arrangement scheme. According to the method, the included angle between the connecting line of the upper and lower jaw alveolar ridges and the occlusal plane is used as a basis for judging the arrangement mode of the back teeth, three-dimensional reconstruction is carried out on the oral cavity of the patient, digital measurement of the alveolar ridge intercrest line angle of the patient is completed in a computer, and the generated arrangement scheme of the back teeth can recover the relation between the upper and lower jaws of the patient more reasonably; the retention, the stability and the chewing performance of false tooth wearing are improved.

The invention relates to the technical field of oral cavity plastic surgery, in particular to a manufacturing method of a digital buckle type guide plate for dental crown lengthening, which comprises the following steps of: 1, scanning an upper jaw dental arch and a lower jaw dental arch of a patient to obtain intraoral scanning data, recording an occlusion relationship at a maximum tooth tip staggering position, and exporting the data for later use; step 2, acquiring facial three-dimensional scanning data, alveolar bone and craniofacial structure data, digital facial arch data, mandibular position and mandibular movement parameters of the patient; 3, fitting various data to determine ideal gingival margin position parameters and bone trimming contour line parameters required in the operation; and 4, on the basis of the parameters determined in the step 3, buckle type guide plates are designed in design software, the buckle type guide plates comprise a gingival resection guide plate and an osteoplasty guide plate, and finally the buckle type guide plates are printed through a 3D printer. By implementing the buckle type guide plate prepared by the method, the stability, the accuracy, the operation convenience and the operation efficiency in the operation process of the dental crown extension surgery are remarkably improved.

The oral cavity opening size adjusting device comprises a fixing frame and a measuring assembly, rotating seats are rotationally clamped to the two ends of the fixing frame correspondingly, through holes are formed in the rotating seats, a sliding rod and a threaded rod are slidably clamped in the two through holes correspondingly, and fixing blocks are fixedly connected to the bottom ends of the sliding rod and the threaded rod through longitudinal rods correspondingly; the measuring assembly comprises a guide rail connected between the two fixing blocks, a moving seat is slidably clamped on the outer side of the guide rail, and a pair of pneumatic rods are rotatably connected to one side, close to the guide rail, of the moving seat; the external shape of teeth of a patient can be measured by the measuring assembly and synchronized to the soft strip clamped in the shaping clamp, then the occlusion block is arranged in the extension direction of the soft strip and clamped to teeth of the lower jaw of the patient, and finally, the occlusion block is pulled through the fixing block so as to be matched with the fixing frame to open the oral cavity of the patient for auxiliary fixing.

This is a dental measuring tool used to check the degree of tooth grinding when grinding and capping teeth. As shown in the "Reference Front View," this tool consists of a gripping portion, an interocclusal measurement portion, and a grinding shoulder measurement portion. For example, when grinding and capping a lower jaw tooth, as shown in "Reference Figure 1 Showing the State of Use," the tip of the interocclusal measurement portion is inserted between the ground lower jaw tooth and the upper jaw tooth to measure the gap. Furthermore, as shown in "Reference Figure 2 Showing the State of Use," the grinding shoulder measurement portion is placed along the ground lower jaw tooth, and the shoulder (foot-like portion) of the lower jaw tooth is measured using the tip diameter of the grinding shoulder measurement portion, and the height of the lower jaw tooth is measured using the scale on the grinding shoulder measurement portion.

This invention provides an invisible orthodontic appliance with an oblique guide module, including an upper brace and a lower brace adapted to the upper brace. An oblique guide module is fixedly disposed on the lingual side of one of the upper or lower braces. The tooth side of the oblique guide module has an occlusal surface, which cooperates with the lingual surface of the other brace. By setting the oblique guide module, the occlusal surface is set on the tooth side, and then cooperates with the lingual surface of the corresponding brace for correction. The appliance has minimal foreign body sensation and is comfortable to wear.

A surgical device for intermaxillary fixation that shortens operating time, reduces the risk of lacerations and puncture wounds for the surgeon, and results in lower patient morbidity. It consists of a clamp or clasp made of titanium, surgical steel, or another biocompatible material, the free ends of which are positioned in the interdental space. One end of the clamp is placed in the interdental space of the maxilla and the other end in the interdental space of the mandible, so that once inserted, the clamp secures or fixes the maxilla to the mandible, preventing the patient from moving or opening it, thus achieving the goal of intermaxillary fixation. This clamp or device is operated and manipulated using forceps for easy application and removal from the teeth.

The utility model provides a snore preventing device which comprises an upper jaw tooth socket, a lower jaw tooth socket, a first positioning piece arranged on the upper jaw tooth socket, a second positioning piece arranged on the lower jaw tooth socket and matched with the first positioning piece, and a retaining jaw block fixedly arranged on the upper jaw tooth socket and used for preventing the lower jaw from retreating. The retaining jaw block is located behind the first positioning piece, the structure is simple, no additional assembly sliding block is needed, the retaining jaw block is integrally formed, and no additional assembly is needed; light foreign body sensation is small, and cleaning and carrying are convenient.

This product is an image for setting up the imaging, displaying setting information, and displaying and editing various information acquired by imaging when using an intraoral scanner (a device used primarily for imaging the oral cavity in dental treatment) to photograph the inside of the oral cavity. The "image diagram" shows the state when the upper jaw selection section is selected. When photographing the upper jaw dentition with an intraoral scanner, the imaging is performed with the upper jaw selection section selected. Also, when the upper jaw selection section is selected, information such as the image of the upper jaw acquired by imaging can be displayed in the captured image / various information display section. The "image diagram with the lower jaw selection section selected" shows the state when the lower jaw selection section is selected. When photographing the lower jaw dentition with an intraoral scanner, the imaging is performed with the lower jaw selection section selected. Also, when the lower jaw selection section is selected, information such as the image of the lower jaw acquired by imaging can be displayed in the captured image / various information display section.

This utility model provides an orthodontic appliance with an integrally molded deep flat guide, including a maxillary brace and a mandibular brace adapted to the maxillary brace. An integral flat guide module is fixed to the lingual side of multiple anterior teeth of the maxillary brace. The width direction of the flat guide module extends along the palatal part of the anterior teeth. The flat guide module is integrally molded with the maxillary brace. By integrally molding the integral flat guide module, it extends from the palatal part of the anterior teeth to form a deep and long structure that has stable contact with the opposing anterior teeth.

This invention relates to the field of dental restoration technology and discloses a method for fabricating a 3D-printed resin filling guide. In clinical practice, the affected tooth is prepared and color matched. Three-dimensional data of the patient's upper and lower jaw dentition and the prepared abutment tooth data are obtained through digital oral scanning, along with the occlusal relationship. The abutment tooth data includes the abutment tooth size, axial direction, and gingival margin morphology. The 3D-printed resin filling guide fabrication method provided by this invention, utilizing digital design and 3D printing technology, creates a resin filling guide that meets the patient's personalized needs. This fundamentally overcomes many drawbacks of existing dental resin restoration techniques, achieving precision, personalization, and minimally invasive dental resin restoration, while improving clinical operational efficiency and patient satisfaction with aesthetic treatment.

The utility model discloses a mistaken swallowing and sucking prevention net for the department of stomatology. The mistaken swallowing and sucking prevention net comprises a flexible protection paste body. A waterproof back adhesive is arranged on the back surface of the flexible protection paste main body; an arc-shaped protruding part used for being attached to the upper jaw of the human body is formed at the front end of the flexible protection paste body. The two sides of the rear end of the flexible protection patch body are each provided with a long-strip-shaped protruding part, and each long-strip-shaped protruding part is divided into two attachment units which are used for being attached to the inner side and the outer side of the alveolar ridge of the lower jaw of the human body. A plurality of through holes are formed in the central position of the flexible protection paste main body. The main body structure of the protection paste is made of flexible materials, and the protection paste can be bent and cut at will; moreover, the whole net for preventing mistaken swallowing and aspiration is attached to the interior of the oral cavity of the patient and is well fixed by being matched with a sublingual anti-falling rope or an anti-falling support, and the device has the advantages of being flexible to use, small in occupied space and low in cost, can be used as a disposable medical instrument, and is high in sanitation and safety and easy to popularize and use.

The application discloses an orthodontic appliance accessory adjustment method and device, electronic equipment and a computer readable storage medium, comprising: identifying a user's mandibular rotation reference point and the current position of the user's target teeth; determining the first rotation radius of the target teeth according to the current position and the mandibular rotation reference point; obtaining the standard thickness of the orthodontic appliance, and determining the mandibular rotation angle of the user according to the first rotation radius and the standard thickness; determining the correction amount of the orthodontic appliance on the teeth to be adjusted according to the mandibular rotation angle, the teeth to be adjusted being the teeth in the user's oral cavity other than the target teeth; and adjusting the height of the accessory corresponding to the teeth to be adjusted based on the correction amount, thereby achieving the adaptation of the accessory height of the orthodontic appliance and the correction amount, preventing the second molar from being passively pressed down due to point contact, improving the upper and lower jaw bite alignment, and ensuring that the upper and lower jaw teeth can stably bite and contact during the process of wearing the orthodontic appliance.

This invention relates to the field of oral medicine technology, and particularly to a method and system for automatic full-mouth tooth arrangement based on occlusal plane feature points. The method involves acquiring dental model information, scanning and automatically arranging teeth from both the upper and lower jaws, further acquiring the centroid coordinates of each tooth, the first limiting distance for each tooth, the feature points on each tooth surface, and the set allowed movement direction; pairing the upper and lower jaw teeth; aligning the z-axis of the centroid coordinates of each tooth pair; performing coarse registration of the tooth pairs based on the first limiting distance and the allowed movement direction; and completing fine registration of the upper and lower jaw teeth by constructing an objective function based on the point cloud data of the two teeth in the tooth pair. An objective function is also constructed based on the alveolar ridge crest line and the minimum distance between two adjacent teeth in the same jaw to optimize tooth arrangement. This invention prioritizes perfect occlusion of tooth pairs while optimizing tooth arrangement, improving the aesthetics and neatness of the tooth arrangement result.

The utility model discloses an intraosseous implant and relates to the technical field of intraosseous implants, the intraosseous implant is integrally formed, the uppermost part of the outer surface of the intraosseous implant is an upper plane, a first outer conical surface is adjacent to the outer side of the upper plane, and a first outer cylindrical surface is adjacent to the lower part of the first outer conical surface; a second outer circular conical surface is adjacent to the lower part of the first outer cylindrical surface, a second outer cylindrical surface is adjacent to the lower part of the second outer circular conical surface, a third outer circular conical surface is adjacent to the lower part of the second outer cylindrical surface, and a fourth outer circular conical surface is adjacent to the lower part of the third outer circular conical surface. According to the utility model, the outer diameter of the fourth outer conical surface is gradually reduced, so that the implant can be better placed into an alveolar bone, and therefore, the implant is easy or stable in the initial stage, and can be immediately implanted, and the treatment cycle of tooth extraction and tooth implantation can be shortened.

The invention discloses a sectional type appliance for quickly correcting posterior tooth locking by stress dispersion connection, which comprises a sectional type tooth socket body, the sectional type tooth socket body is a shell-shaped cavity for wrapping the tongue side and the cheek side of a complete dentition, the sectional type tooth socket body comprises a tooth socket body for covering other dentitions and a tooth socket body for covering posterior tooth locking / reverse locking, and the shell-shaped cavity is a shell-shaped cavity for covering the tongue side and the cheek side of the complete dentition. The tooth socket body covering the locking / reverse combination of the rear teeth is located at the position of the rear teeth of the sectional tooth socket body, an elastic structure is arranged between the tooth socket body covering the other dentition and the adjacent tooth socket body covering the locking / reverse combination of the rear teeth, and the elastic structure provides pulling force or pressure for the tooth socket body covering the locking / reverse combination of the rear teeth. Correcting force can be formed on teeth through the elastic structure and the elastic rod, occlusal force is guided by the induction inclined face to achieve tongue pushing and lip pulling of maxillary teeth and tongue pushing and lip pulling of mandibular teeth, back teeth are rapidly corrected to be reversely combined or locked, and the back tooth / reverse combined locking appliance is efficient, safe and feasible.

The invention provides a preparation method of an oral three-dimensional occlusion induction type high-angle bone face type appliance, which comprises the following steps: acquiring upper and lower jaw dentition digital models of a child patient, constructing upper and lower jaw tooth digital models of the child patient after occlusion reconstruction of the upper and lower jaws, and then designing a back tooth occlusion relation and a maximum occlusion contact mode after occlusion reconstruction, a design scheme of the invisible tooth socket containing the gap part is obtained, and a design scheme of the flexible filler is constructed. The invisible tooth socket containing the gap part prepared according to the design scheme can be independently used and can also be matched with flexible filler for use. The orthodontic appliance can solve the technical problem that the existing orthodontic appliance is difficult to simultaneously and effectively control the perpendicularity and inclination of front and rear teeth, adjust occlusion induction and tooth uniformity and adjust the inclination of an occlusion plane during deciduous tooth shedding and permanent tooth eruption of a child patient.

The present disclosure belongs to the technical field of medical instruments, and discloses an intubation tube holder, including a clamping sleeve. A mounting notch is provided in each of two sides of one end of the clamping sleeve. The two mounting notches are symmetrically distributed about a circle center of the clamping sleeve. A support plate is rotatably connected into each of the two mounting notches. Elastic dental pads are fixedly connected to upper and lower ends of the support plates. The support plates are driven to rotate to original positions through elastic release of torsional springs. The two support plates move to a periphery to drive the elastic dental pads to move, so that the elastic dental pads on the two sides are just located between upper and lower groups of chewing teeth of a patient. When the mandible muscles of the patient naturally contract, the upper and lower chewing teeth of the patient are just in contact with the elastic dental pads at tops and bottoms of the support plates. The elastic dental pads play a role of supporting the mouth of the patient. Compared with an existing holder, the intubation tube holder solves the following problem that the patient bites on an outer wall of the holder with the front teeth for a long time, and further avoids looseness and deformation due to overtime stress on the front teeth of the patient.

This invention provides an occlusal guiding appliance for the mixed dentition period, an orthodontic system for guiding jawbone growth during the mixed dentition period, and a design method thereof. The occlusal guiding appliance for the mixed dentition period includes: a maxillary brace; a mandibular brace; and an intermaxillary connector located between the occlusal surfaces of the maxillary and mandibular braces in the posterior region. The maxillary and mandibular braces form a rigid, immovable integral structure at the occlusal surfaces via the intermaxillary connector. The intermaxillary connector has a preset thickness to open the occlusal contact between the upper and lower anterior teeth when worn, and is configured to lock the mandibular brace at a preset three-dimensional spatial position relative to the maxillary brace body. This allows the occlusal guiding appliance for the mixed dentition period to use the upper and lower dentitions as an integral interactive anchor when worn, converting occlusal force into orthodontic force acting on the dentition or jawbone.

The invention relates to the field of medical instruments, and discloses a mouth floor genioglossus monitoring device which comprises a retainer (10) and a monitor (20), the retainer (10) is arranged to be capable of being fixed to lower jaw teeth of a patient, and the monitor (20) is connected to the inner side of the retainer (10). The supporting surface (233) is used for supporting the tongue body of the patient; and the monitoring part (21) is used for being in contact with the genioglossus of the mouth floor of the patient to monitor an electromyographic signal of the patient. The mouth floor electrode is in contact with the genioglossus surface for monitoring, interference of activity of adjacent muscular tissue on a monitoring result is avoided, and meanwhile the monitoring mode is more easily accepted by a patient due to noninvasiveness of the monitoring mode. Compared with the prior art, the monitoring accuracy and the comfort level of the patient are improved to the maximum extent.

A device for orally collecting multiple biomarkers of a subject includes one or more plates composed of a thermoplastic or other impression material that softens at a temperature of about 150 deg F. and hardens to complete rigidity at temperatures below about 100 deg F. The plates are shaped to fit in the subject's mouth and receive bite impressions of the teeth in the upper and / or lower jaw. The plates extend out of the mouth and provide a gripping portion that the subject pinches to create fingerprint impressions on the softened plates. A rigid body provides a mounting portion for the plates and a handle portion for a person other than the subject to hold while the samples are being collected. Roughened structures, protrusions, or grooves may be formed in the plates and body in areas that contact the subject's inner cheek surfaces, collecting and retaining saliva and skin cells.

The invention discloses a manufacturing method of a personalized biteplate for assisting in recovering the occlusal relationship of a patient with comminuted mandible fracture, which comprises the following steps: acquiring medical image data of the maxillofacial region of the patient, performing three-dimensional reconstruction based on the medical image data, and generating a mandible three-dimensional model containing all fracture fragments; in a three-dimensional modeling environment, taking recovery of a normal anatomical relation of a temporomandibular joint as a priority reference, performing virtual anatomical reduction on fracture fragments in the mandible three-dimensional model to obtain a virtual reduction mandible model; based on the virtual reduction mandible model and the corresponding maxillary model, designing a three-dimensional digital model of the personalized biteplate for connecting and stabilizing the positions of the upper jaw and the lower jaw according to the occlusion relationship between the upper jaw dentition and the lower jaw dentition; and according to the three-dimensional digital model of the personalized biteplate, a solid biteplate is manufactured through a 3D printing technology. The problem that the occlusal relationship of the patient with the comminuted mandible fracture is difficult to recover is systematically solved.

The application discloses a kind of real-time CBCT guided centric relation determination method, system, equipment and storage medium. Upper and lower jaw dental arch and jaw three-dimensional data are obtained by intraoral scanning and CBCT scanning, and a virtual patient model is fitted and established;Obtain the spatial position relationship between motion acquisition marker and patient dentition;Use probe to pick up dental arch feature points, establish the spatial mapping relationship from motion acquisition marker to CBCT coordinate system;Real-time tracking of marker position is realized through electronic facebow system, and the position of condyle in glenoid cavity is dynamically displayed in real time on CBCT image based on spatial mapping relationship;Under the guidance of real-time visualization, the clinician preliminarily determines the centric relation position candidate in combination with clinical method;Guide the patient to carry out joint function movement, and monitor the joint function and masticatory muscle activity synchronously, and determine the final centric relation position after verifying the health of temporomandibular joint function.The application realizes chair-side real-time visualization and function verification, and significantly improves the diagnosis and treatment efficiency of jaw position determination.

The application discloses a dental system, comprising two aligners corresponding to an Nth aligning step and an N+Mth aligning step, N and M are positive integers, each aligner comprises a jaw plate structure connecting upper and lower jaws, the jaw plate structure comprises a first part corresponding to upper teeth and a second part corresponding to lower teeth, when the jaw plate structure connects the upper and lower jaws, the first part and the second part abut each other to form an abutment surface, the two jaw plate structures corresponding to the two aligners have different parameters, the different parameters are configured to generate different forces and / or different moments when the jaw plate structures connect the upper and lower jaws. The different parameters of the application can make the two aligners generate different forces and / or different moments, and the different forces and / or different moments can meet the aligning requirements of different aligning steps.